File: groff.info,  Node: Macro Package Intro,  Next: Preprocessor Intro,  Prev: groff Capabilities,  Up: Introduction

1.4 Macro Packages
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Elemental typesetting functions can be be challenging to use directly
with complex documents.  A "macro" facility specifies how certain
routine operations, such as starting paragraphs, or printing headers and
footers, should be performed in terms of those low-level instructions.
Macros can be specific to one document or collected together into a
"macro package" for use by many.  Several macro packages available; the
most widely used are provided with 'groff'.  They are 'man', 'mdoc',
'me', 'mm', 'mom', and 'ms'.